CHRONO

10 s.

Calculer des produits par 2, 20, 200, 4, 40, 400.

CHRONO

0 s.
400 x 4 =
2 x 4 =
20 x 10 =
1 x 2 =
40 x 13 =
8 x 2 =
6 x 200 =
12 x 2 =
4 x 3 =
8 x 4 =
15 x 400 =
4 x 10 =
10 x 20 =
12 x 40 =
1 x 200 =
11 x 20 =
2 x 14 =
40 x 11 =
40 x 9 =
4 x 14 =